【摘要】 采用双电解槽氢渗透法研究了表面镀镍与否、试样厚度、充氢溶液中硫脲含量和充氢电流密度等各种因素对扩散系数的倒数TH值的影响.结果表明,表面粗磨、不镀镍,也能测出稳定的TH值.当试样厚度d从0.25 mm增至0.6 mm,TH值线性下降;d≥0.6 mm后,TH值保持不变。升高电流密度、增加硫脲含量均使TH值下降。更多还原

【Abstract】 Hydrogen-induced fish-scaling resistance got better as hydrogen diffusion coefficient of enamelled steel sheet D decreased,which is inversely proportional with the TH value.The main objective of this work was to study the effects of certain variables such as nickel-plating or not,sample thickness,promoter concentration and charging current on TH value.The results showed that no-nickel-plating for sample surface did not influence the stability of TH value.If sample thickness d increased from 0.25 mm to 0.6 mm,TH value decreased linearly. TH value kept invariant when d≥0.6 mm.TH value decreased with the increase of charging current density and promoter concentration.更多还原